Cutting-off tool



(No Model.) 2 SheetsSheet 1. J. E. MORSE.

CUTTING OFF TOOL.

No. 595,918. Patented Dec. 21,189'7..

WITNESSES (No Model.) 2 SheetsSheet 2.

J. EMORSE. CUTTING OFF TOOL.

No. 595,918. Patented 1160.. 21,1897.

UNITED STATES P TENT OFFICE.

JOSEPH EASTMAN MORSE, OF BRIDGEPORT, CONNECTICUT.

CUTTING-OFF TOOL.

SPECIFICATION forming part of Letters Patent N 0. 595,918, dated December 21, 1897. Application filed J'uly20, 1897. Serial No. 645,201. (No model.)

To all whom it may concern:

Be it known that LJOSEPHEASTMAN Monsn, acitizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Holders for Cutting-Off Tools; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to holders for cuttingoff tools for metal-workin g machines, and has for its object to simplify and cheapen their construction and to greatly improve their operation in use. WVith these ends in View I have devised the simple and novel holder which I will now describe, referring by letters and numbers to the accompanying drawings, forming part of this specification, in which Figure 1 is a view showing one form of my novel holder and cutting-off tool in elevation, the block and a bar which is being operated upon appearing in section; Fig. 2, an end View corresponding therewith, the two cutters being in section; Fig. 3, a view corresponding with Fig. 1, illustrating another form in which I have carried my invention into effect, the device being used in connection with a toolpost; Fig. 4, an end view corresponding with Fig. 3, the two cutters being in section; Fig. 5, a view corresponding with Fig. 1, illustrat ing still another form in which I have carried my invention into eifect, one of the cutters being removed; and Fig. 6 is an end view of the form illustrated in Fig. 5, two cutters being shown, both in section.

A denotes the carrier, and B a block upon which it rests. The block is usually provided with an undercut groove 1, which receives a sliding block 2, as in Fig. 1, or the base 3 of a tool-post C, as in Fig. 3. The carrier is provided on its under side with a recess 4, which receives the block B, as clearly shown in Figs. 1, 3, and 5, with a depending lug 5, carrying a set-screw 6, which engages the block to lock the carrier against lateral displacement in removing the cutters, as will be more fully explained, and with inclines 7. It will of course be apparent that the special shape of this carrier and the exact location of the inclines .are

not of the essence of my invention, but are mere details of construction, which 'may be Varied to suit the requirements of the use for which the tool is intended or the taste of the manufacturer. In the present instance I have shown the inclines as formed upon opposite sides of the carrier by cutting away the metal, the thickness of the carrier above the inclines being reduced by the width of the inclines. I have also shown the inclines as provided with grooves 8, which receive the lower edges of slightly wedge-shaped cutters 9.

It is not essential that wedge-shaped cutters be used, although I prefer them in use, the thickness of the upper edges of the cutters being practically the width of the inclines, as indicated in Figs. 2, 4,, and 6. v The top of the carrier is also an incline lying parallel to incline 7. This incline upon the top of the car- I rier I have designated by 10.

In Figs. 1 to 4, inclusive, I have shown incline 10 as provided with a shoulder 11, the purpose of which is to limit the downward movement of a holding-block 12, by which the cutters are locked in place upon the carrier, said holding-block being provided with a groove 13, (see dotted lines, Figs. 1 and 3,) which receives the reduced upper end of the carrier, leaving side walls let, which rest upon the tops of the cutters. In practice I preferably make the top of the holding-block parallel with the plane of block B.

In the forms illustrated in Figs. 1, 2, 5, and 6. I have shown the cutters as locked in position' by means of a bolt 15, which passes through unthreaded openings in the holdingblock and the carrier and is threaded to engage a threaded opening in sliding block 2, lying in undercut groove 1, it being of course understood that the cutters may be readily loosened or tightened by turning the bolt in or out, as may be required.

In order to remove either of the cutters for adjustment or for changing, it is simply necessary to loosen the bolt sufficiently to loosen the holding-block, which leaves thecutters free to be removed and replaced.

In the form illustrated in Figs. 1 and 2 the holding-block is provided with flanges 16, which inclose the upper edges of the cutters and which, in connection with grooves 8, render it impossible for the cutters to move laterally in use.

In the form illustrated in Figs. 3 and 4 I have shown my novel holder as used in connection with a tool-post O. In this form bolt 15 is dispensed with. The tool-post is provided with a slot 17 which receives the carriers, the cutters, and the holding-block, all of said parts being retained in position by a set-screw 18, which passes through the top of the tool-post and bears upon the top of holding-block 12. In this form, in addition to recess 4 in the under side of the carrier, I provide an additional recess 19, (see dotted lines, Fig. 3,) which receives the baseof slot 17 in the tool-post. By providing that each carrier shall carry a cutter upon each side thereof I insure always having a cutter ready for use and am also enabled to cut nearer to the head-stock than is possible with any tool of this character now in use.

In the form illustrated in Figs. 5 and 6 the under side of the holding-block is simply a fiat incline which rests upon the tops of the cutters and is locked in place by a bolt 15 in the same manner as in the form illustrated in Figs. 1 and 2. It will be noticed that in the form illustrated in Figs. 5 and 6 groove 13 and with it the side Walls 14; of the form illustrated in Figs. 3 and 4, the flanges 16 of the form illustrated in Figs. 1 and 2, and the shoulder 11 of Figs. 1 to 4, inclusive, are all dispensed with. The flat incline of the holding-block rests upon the tops of the cutters, and the block and cutters are held against lateral displacement by means of dowel-pins 20, fixed in one of the parts and engaging recesses 21 in the other part. In the present instance I have shown the dowel-pins as fixed in holding-block 12 and as engaging recesses 21, which are formed to receive them in carrier A.

Having thus described my invention, I claim- 1. A holder for cutting-oflf tools comprising in its construction a carrier having an incline extending downward and backward from the front thereof and adapted to receive a cutter resting upon said incline, means for locking said cutter in operative position, and independent means for holding the carrier in its adjusted positions, whereby the tool may be removed from or secured in the carrier Without disturbing the adjustment of the latter.

2. A holder for cutting-01f tools consisting of a carrier and having inclines extending backward from the front thereof and adapted to receive cutters resting upon said inclines, a holding-block resting upon the cutters, means for locking the holding-block and cutters in operative position, and independent means for holding the carrier in its adjusted positions, whereby the tools may be removed from or secured in the carrier without disturbing the adjustment of the latter.

3. A holder for cutting-off tools consisting of a carrier having inclines extending downward and backward from the front thereof, said inclines being provided with grooves 8 to receive cutters, a holding-block resting upon the tops of the cutters, means for looking the l1olding-b1ock and cutters in operative position, and independent means for looking the carrier against lateral movement.

4:. A holder for cutting-01f tools consisting of a carrier having inclines on opposite sides extending backward from the front thereof to receive cutters, a holding-block having a groove 13 to receive the carrier, and sidewalls 14 which rest upon the cutters, means for locking said holding-block and cutters in operative position, and independent means for locking the carrier against lateral movement.

5. A cutting-off tool consisting of a carrier having inclines extending downward and backward from the front thereof, a recess to receive a fixed block and a depending lug carrying a set-screw to engage the fixed block, cutters resting upon the inclines, a holdingblock resting upon the cutters and means for locking the holding-block and cutters in 0perative position.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH EASTMAN MORSE.

Vitnesses:

A. M. WoosTER, II. A. LAMB. 

